This open-source solution has no rival in the simplicity department. Software tools simply don't come any simpler than InjuredPixels.
Software Informer Editor's Pick Award, 5-Star rating
If you aren't exactly sure where your pixel problem is, you can use the aptly-titled InjuredPixels. The pixel detector allows you to blank out your screen in multiple colors to test the display.
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Conclusion: A useful app that can be taken out of a USB flash drive to test a monitor or LED LCD display on a new laptop before purchase. Check a display in a variety of colors to see dead pixels that can come in different colors.
Download3K Excellent Editor's Review Award, 5-Star rating
Editor's Opinion: InjuredPixels is an efficient, portable and highly useful tool targeted at all LCD owners in order to successfully detect the dreaded dead pixels. Lightweight and Free to use!
No one wants to purchase a new monitor only to find out it comes with dead or locked pixels straight out of the box. InjuredPixels is a small application designed to prevent this from ever happening.
FileCluster Editor's Pick Award, 5-Star rating